The Siemens 6ES7441-2AA02-7AG0 is a Configuration package CP441 (g) for the S7-400 series. It provides the configuration data and setup parameters for the CP441 communications processor, which handles point-to-point serial links (RS-232, RS-422, RS-485) in a S7-400 rack. This is the software/parameter package, not the hardware module itself — you load it into the CPU or the CP to define the protocol and port behavior.
Deployment Context
This configuration package is deployed in S7-400 racks where the CP441 communications processor handles serial fieldbus or point-to-point links. The hardware module mounts in a standard S7-400 rack slot; the CP441(g) package is loaded via the CPU's memory card or the engineering station (STEP 7). Typical uses include connecting to MODBUS RTU slaves, printing systems, barcode scanners, or legacy RS-232 devices on a production line.